Lawn sprinkler



c. w. HART LAWN SPRINKLER `F11d`umh- 1s. 1924 L .i Er.. 5

JNVENToR ATTORNEY;

Patented Oct. 20, 1925.

CHARLES W.` HART, OF REXFORD, MONTANA.

LAWN SPRINKLIEIS.,Y

Applicaton filed March 13, 1924. Serial No. 699,100.

To all whom t may concern.' i

Be it known that I, CHARLES W. HART, a citizen of the United States, and a resident of ReX'ford, in the county of Lincoln and State of Montana, have invented a new and Improved Lawn Sprinkler, of which the following is a full, clear, and exact description, Y'

This invention relates to a lawn sprinkler. The invention has for an object the provision of a simple, compact, durable and eiiicient mechanism whereby the sprinkler will act automatically and periodically to vary the osition of the spray nozzles, said action ta ing place inl response to the reaction of the water as it leaves the nozzle and effecting a periodic adjustment of the w'ater valves in the manner hereinafter described. l

Another object concerns the provision of a mechanism involving the use of a minimum number of parts of such simple construction Aas to require little care and attention. v

A further object concerns the provision of means whereby the angular travel ofv the nozzle supporting elements can be adjusted as desired.

A still further object concerns the provision of a new and improvedform of spray plates which can b'e readily attached to or removed from the nozzles.

Another object concerns the provision of a construction of valve mechanism composed of a minimum number of parts which can be readily disassembled for inspection and repair in cleaning.

The invention is illustrated in the drawof whichin y l Tsigure 1 is a section taken on the line 1--1 of Fig. 2;

Fig. 2 is a section taken on the line 2-2 of F 1g. 1; y l Fig. 3 is a section taken through the valve; p

Fig. Lip is a section taken on section lme 4 4 of Fig. l; and

Fi 5 is a section similar to Fig. 3 showin t e valve sleeve in another position. 5 he form of the invention shown in the drawings is a preferred form, although it is understood that modifications in the construction andl arrangement of the parts and in thecharacter of the materials used may be adopted without departing from end being threaded. The casing is supsleeve rotates, will come in contact with one the spirit of the invention as set forth in the appended claims.

In general, this invention comprises a sprinkler, preferably in the form of a tripod, having a supporting or base plate on which a valve spindle is mounted. This valve spindle projects .forwardly from the base plate and is connected to the water supply pipe. The spindle is apertured and acts as 4a support for a valve sleeve which is frictionally mounted thereon and rotatable with .respect thereto. This valve sleeve is adapted, in turn, to be embraced land friotionally engaged witha valve casing. The sleeve and the casing are both adapted to rotate With relation to the spindle. The sleeve and the casing are held on the spindle by means of clamping nuts fastened tothe upper end of the spindle` said upper plied with the usual water pipes on the ends of which nozzles are located. The nozzles, of course, as usual, are disposed at right angles to the'main portion of each pipe so that the reaction 'of the water in leaving the nozzle will give a turning movement to the pipes. A .clamp is adjustabl disposed on the end of each nozzle and7 each clamp supports a spray plate which projects beyond the nozzle and across the axial 95 line of the nozzle, intercepting the iow of water and directing it u into a broader, flatter stream jor. spray. lese clamps arey adjustable on the nozzle so that thes ray plates just mentioned can be adjuste to direct the water at any desired angle.

Although the valve sleeve and the casing are both rotatable on the spindle they are, nevertheless, independently rotatable. On the base plateof the, tripod .a plurality of projections, such as pins, are disposed which can be located at various poi'ntson the plate. The lower end of the valve sleeveis provided with a lug or projection which, as the valve ofthese pins so that the movement of the sleeve will cease. The valve casing, however, will continue to move for a given dist-ance, at which time a shoulder formed on the valve casing will encounter another portion lof the lug on the valve slee-ve so as to interrupt the continued movement ofthe casing. Ator be fore this movement, however, the relative movement which is taking lace between the l casing and sleeve has causedl the reversing of ,110

the direction of flow of the waterthrough the pipe so that the reaction of the water leaving the new pipe' will cause the casing and the sleeve. to be rotated in the opposite direction. This rotation in the opposite direction will continue until the lug on the sleeve engages the first pin encountered in its new motion,

whereupon the sleeve will stop and the casing will continue for an angle of movement, when another shoulder on the casing will encounter the\lug. At this time, again, the water reversal has taken place and motion in the opposite direction takes place. This action is automatic and continuous. By disposing the pins on the base plate of the tripod further apart in an angular respect, the are otl movement of the sprinkler arms or pipes can be regulated as desired. .ln fact, it the pins are removed entirely and the nozzles are disposed to point in opposite directions, as in the case of an ordinary sprinkler, the arms will move continuously in one direct-ion.

As shown inthc drawings, the invention comprises a tripod base plate 1 to which suitable adjustable legs 2, 3 and 4r are attached.

` This tripod is provided with a valve spindle 5, preferably conical in shape, which projects vupwardly therefrom. 'lhe upper end G of the spindle 5 is threaded to receive clamping nuts 7 and 8. The spindle is provided with suitable ports or apertures such as 9. This spindle is adapted to act as a support or seat for a hollow valve sleeve angular in shape. This sleeve is numbered 1() and is provided with an opening cut in one side forming an angle of 180. 'The lower end of this sleeve is provided with a lug or projection 11 which, as the sleeve rotates on the spindle, is adapted to swing over the base platefl. This base plate, in the arc ot' travel oit' thelug, is provided with holes 12 into which pins such as 13 may be inserted as desired; the idea being that the lug will encounter the pins 13 in any direction of this movement, and when this encounter takes place the movement of the valve sleeve will cease. Certain other holes 14 are provided on the base plate -at a greater distance fro-m the center of the plate so as to receivel the pins at the path of movement of the lug 11 when they are not intended to be effective.

Frictionally supported over the sleeve 10 is a valve casing 15 open at the bottoir and provided at ythe top with an aperture through which the threaded end 6 ofthe spindle 5 projects. A washer 16 is disposed between the clamping nuts 7 and 8 in the top of the casing 15. This casing is provided with two ports 17 and 18 located on opposite sides thereof into which threaded nipples 19 and 20 of sprinkler pipes 21 and 22 are introduced.- These sprinkler pipes have their ends open at right angles to formnozzle portions 23 and 24. Clamping sleeves 25 and 26 are adjusted on the nozzle portions 23 and 0' sleeves 25 and 26 are adjustable on Itwill be noted that the slotted portion of the valve sleeve 10, when disposed in the normal position shown in Fig. 2, will leave the ports 17 and 18 partly open so that water can flow through the spindle, through the sleeve and into both ports. This will cause the water to flow in both pipes and be discharged from both nozzles. By the operator imparting -a slight movement to the casing to move itl from this mid position one port -will be closed more than the other. producing an unbalance in the fluid reaction, whereupon rotation will commcnce. Further rot-ation will entirely close one port until the lug' 1l encounters a pin. lf continuous rotation is desired the nozzles are adjusted to point in opposite directions and the sleeve is disposed in its halfway position, shown in Fig. 2, and the pins 13 are disposed in the holes 14 instead of in the holes 12. It will be noticed that, is shown in the sections in Figs. 2` 3 and 5, the conical slope of the spindle is slightly different from that of the inner surface of the valve sleeve so as to form a. chamber therebetween into which the liquid can be forced, whereby its pressure will tend to hold the valve sleeve upward. against the inner surface of 4a casing so that the `friction between the valve sleeveand the spindle is considerably reduced, the water also acting as a lubricant.

However, it' one ot the pins 13 is located in one of the holes 12, then the rotation ot' the lug 11 will, in due time, cause it to encounter the pin which will interrupt the movement of the sleece 10. This interruption ot the sleeve 10, however, will not stop the rotation of the casing 15 and it will continue to rotate, and in so doing will alter the relation of the sleeve 10 with respect to the ports 17 and 1.8 so that one port will commence to be closed and, consequently, water will be shut oft' from this port and allowed to flow freely through the other. This motion of the casing will continue until one of the shoulders 29 and 30 (see Fig. l) engage with the upper portion of the lug 11, at which instant the motion of the casing will stop. However, at this instant, or just prior thereto, the relation of the valve sleeve 10 to the ports 17 and 1S has been so established that water will commence to flow out of the other nozzle and will be interrupted in the nozzle previously in use so that the back kick of the water will start the sprinkler arms or pipes moving in the opposite direction., This opposite kmovement will continue until the lug engages a pin in this 0pposite direction of movement, whereupon a similar action takes place, causingia reversal of the mechanism again.

It is perfectly obvious that I have provided -a simple, eiiicient and compact mechanlsm composed of a minimum number of simple parts so associated that the automatic operation takes place with certainty, and that the parts, because of this simple association, can be very readily assembled and disassembled for cleaning, inspection and repair. Essentially, the fundamental apparatus comprises the spindlethe valve sleeve and the casing in conjunction with the lug on the' sleeve, and adjustable means on the base plate to interrupt the. motion of the sleeve at predetermined intervals.

1. A lawn sprinkler, which comprises a base portion, a valve spindle thereon and having ports therein, a ,valve sleeve mounted on the spindle and having a port, a valve lcasing mounted on the sleeve and having oppositelyarranged ports, said sleeve andcas ing both being rotatable on the spindle and the casing rotatable with respect to the sleeve, and means on the base to engage the sleeve to interrupt its motion at" predetertween. n

5. A lawn sprinkler, which comprises a 85 'spindle mounted on a base plate, a valve mined points in its travel.

2. A lawn sprinkler, which comprises a base portion, a valve spindle thereon and having ports, a valve sleeve mounted on the :spindle and lhaving a port, a valve casing mounted on the sleeve and having oppositely arranged ports, said sleeve and casing both being rotatable on the spindle and the casingrotatable with respect to the sleeve, means on the base to engage the sleeve to interrupt its motion at predetermined points' in its travel, and means on the sleeve and onthe casing to interrupt the motion of the casing withrespect to the sleeve after the sleeve has been stopped.

`3. A lawn sprinkler, which comprises an apertured valve spindle, a valve sleeve thereon, said sleeve being ported, a valve casing' rotatable on the sleeve, said casing having ports disposed on opposite sides thereof, the relation ofthe ports in the casing and the sleeve being such that wlen one port in the casing is entirely closed by the sleeve the other is open, nozzled pipes connected to the ports in the casing, the reaction ofthe water plate on which the spindle ismounted, ad o0 justable stop means on the base plate alined in the path of movement of the sleeve, and means on the sleeve to engage said last-mentioned means to interrupt the motion ofgthe sleeve at given points in its travel whereby 6 5 the relation of the ports in the sleeve and the casing can be altered to effect a reversal'Y of theb motion of the mechanism. A

4. A lawn sprinkler, which comprises a rotatable vah'e casing and a rotatable valve 70 sleeve frictionally engageable and both rotatably mounted on a common spindle, a base on which said spindle is mounted, a pro- ]ection on the sleeve, adjustable stop-means on the base plate to engage with the pro# jection to interrupt the motion of thesleeve, means tending to move the valve casing as long as water is flowing from the sprinkler, and means on the valve casing engageable with the determined) points in the relative movement of the casing with respect to the sleeve to interrupt the relative movement therebesleeve rotatable thereon, a valve casing frictionally engageable with the sleeve and rotatable therewith and thereon, said. spindle.

sleeve and casing having ports, the ports of790 the spindle and sleeve wholly or partially registering all the time with each other and the ports of the casing alternately register ing with the ports ofthe sleeve and spindle,

4nozzle pipes connected to the casing and dis- 95 posed to cause the rot tion of the-casing due 'to the reaction of t e water leaving the nozzles, a lug on the 'lower end of the valvel sleeve ,pins Aon the base plate to engage the lug to sto and vshoulders formed on the casing adapted to engage another portion -of sald lugy to interrupt the relative movement between the casing and the sleeve.

- CHARLES W. HART.

rojection Von the sleeve at preso the motion of* the valve sleeve, 100. 

